Straightway valve



(No Model.)

E. H. LUNKEN. STRAIGHTWAY VALVE.

No. 594,634. Patented Novc 30,1897.

XVM mV//w UNITED STATES PATENT @Enron EDMUND H. LUNKEN, or DENVER, COLORADO.

STRAIG HTWAY VALVE.

SPECIFICATION forming part of Letters Patent No. 594,634, vdated November 30, 1897. Application meer December 21, 1896. serial No. 616.445. (No model.)

of Colorado, have invented a certain new and useful Improvement in Straightway Valves, of which the following is a description, reference being had to the accompanying'dra'win gs, forming part of this specification.

My invention has for its object the provision of simple and efficient means of a novel character for securing together the body and the bonnet or hood of the casings or shells of valves of this character and for guiding the valve-disk in its reciprocating movements in opening and closing the valve, all as will be hereinafter more fully described, and particnlarly pointed out in the claims.

In the accompanying drawings, Figure 1 represents a perspective view of one form of straightway valve embodying my invention;

Fig. 2, a middle vertical section of the same inline 4 4 of Figs.- 2 and 3; and Figs. 5 and 6 sectional details from Fig. 2, showing modifications of construction.

The same letters'of reference refer to corresponding parts in the several views. Y.

The casing or shell of the valve shown in Fig. l consists of the body A, having the Opposite pipe connections B B and the bonnet or hood C, fitting upon and secured tothe body A and provided with the vertically-eX- tending neck D. In valves of this character as heretofore constructed the bonnet has generally been secured to the body of the casing either by being screwed upon the latter or the two parts have been` provided with flanges projecting outward around their meeting edges and been secured together by short bolts passed through said anges. Both methods are more or less objectionable, and in one form of valve heretofore devised by me it has been sought to overcome such objections by securing the body and the bonnet of the casing together by means of a U-shaped clip surrounding the body of the casing at its middle and seated in a groove formed in the exterior thereof and passi-n g at its upper ends thereof, as in the valve last above referred to.

As seen in Fig. 2 of the accompanying drawings, .there are passed upward through the body A of the casing upon opposite sides of the passage through the valve, at the middle thereof, two bolts E E, the sides of the valve-body being projected outwardly sufficiently to accommodatethese bolts between the shell of the body and the valve-disk F, which latter is coupled at its upper side to the valve-stem G, which is provided with threads H, coperating with internal threads I in the bonnet Gand neck D of the casing and provided at its upper end with a handwheel J, by which it may be turned to raise and lower the disk F to open and close the passage through the valve. The bolts E E eX- tend upward through the bonnet C, and their threaded upper ends project upward through and beyond said bonnet, upon opposite sides of the neck D thereof. Screwed upon these threaded upper ends of the bolts are closed cap-nuts K K, while the lower vends of the bolts are provided with heads L L, against the inner faces of which lit lugs or shoulders M M, formed upon the under side of the body A, to prevent the bolts E E turning when the cap-nuts K K' are screwed upon their upper ends or unscrewed therefrom. Interposed between said heads L L and the under side of the body A are suitable washers N N, surrounding the bolts E E, to form-close joints between the lower ends of the bolts and the valve-body, while like washers O O are interposed between the cap-nuts K K and the upper side of the bonnet O to form close joints around the upper ends of the bolts EYE.

So far as the construction of the valve above described is concerned, the packing P around the valve-stem G, at the upper end of the neck D of the bonnet, might be confined in place by a cap-nut screwed upon the upper end of said neck B, as is common in valves of this character; but I Ahave shown IOO said packing in the present instance as coniined by a cross-head or gland Q, fitting over the upper end of the neck D and provided in its opposite ends with openings, through which pass the upper ends of rodsRR, which are secured at their lower ends to the eapnuts K K and are provided upon their threaded upper ends with nuts S S, by which the cross-head Q, and packing P may be securely held in place.

As shown in Fig. 2 of the drawings, the rods R R, at their lower ends, are formed integral with the cap-nuts K K; but it is not essential that theyshould be so formed, since instead they may be secured to the cap-nuts K K by being screwed into suitable threaded recesses provided in the upper ends of said nuts.

T represents the usual metallic packingring interposed between the body A and bonnet C, being seated in a groove in the upper edge of the former and pressed down by the latter to form a close joint.

It will be seen from the foregoing description that I have provided an exceedingly simple and efficient means for securing together the body and bonnet of valve-casings of this character7 by which I am enabled to avoid the necessity of cutting threads upon either the upper end of the body or within the lower end of the bonnet for that purpose or the necessity of providing the body and bonnet with projecting flanges and drilling the numerous holes through them to provide for the necessary bolts to secure the body and bonnet together in the manner heretofore described. My novel means for securing the body and bonnet of the casing together serves, however, another novel and useful purpose in that the bolts E E serve as guides to hold the valve-disk F in true position as it is raised or lowered to open or close the valve, the opposite edges of said disk being provided in the present instance with shallow grooves to fit against the inner surfaces of the bolts E E, as indicated in Fig. 2 and shown in Fig. 4.

It is not absolutely essential that the lower ends of the bolts E E shall be provided with the heads L L, for instead the holes in the lower side of the body A, through which such bolts pass, maybe threaded, as shown in Fig. 5, and the lower ends of the bolts E E be correspondingly threaded and screwed into such holes from the upper side, in which event the lower ends of the holes would be preferably closed by screw-plugs U U. So, too, it is not essential that the upper ends of the bolts E E shall project through and above the upper surface of the bonnet C, since by providing nuts such as shown in Fig. 6 the upper ends of the bolts may be terminated below said surface. The same sort of nuts might also be employed upon the upper ends of the rods R R in place of the nuts S S.

In the particular form of valve shown in the accompanying drawings the valve-disk is of wedge shape in vertical cross-section and cooperates with the two inclined seats I1" FQ formed in the body A; but it will be understood that even in a valve otherwise the same as that shown in the drawings a different form of valve-disk cooperating with a single seat may be employed instead of the wed ,ge-shaped disk and double seats.

Again, the form of valve to which my invention is shown applied in the accompanying drawings belongs to the class having what are known as rising stems, in that the valve-stein is raised and lowered by turning it and carries the valve-disk up and down with itself to open and close the valve; but it will be understood that my invention is equally applicable to the common forln of straightway valves having what are known as stationary stems, in that the stem is not movable longitudinally, but is threaded at its lower end and screwed into a vertical hole in lthe valve-disk, so that the turning of the stem in one direction serves to lift the valve-disk to open the valve, while the turning of the stem in the opposite direction serves to force the disk downward to close the valve without the stem itself moving longitudinally in either case. Owing to the fact that in valves of this last-mentioned class the valve-disk has to be provided with an internally-threaded hole to receive the lower end of the valvestem, the valve-disks in such valves are usually somewhat thicker than the disks in valves such as that shown in the accompanying drawings, and where the disks are thick enough for the purpose the bolts E E, heretofore described, instead of passing upward through the body and bonnet of the casing at the opposite edges of the disk may pass through vertical holes provided in the valve-disk itself near its opposite edges, thus serving to guide the valve more efficiently than where the opposite edges of the valve simply bear against the inner surfaces of the bolts, as in the accompanying drawings. In such event the bolts would of course more or less obstruct the passage through the valve, but this would not be a serious objection in valves for some purposes, while it would be in others. Again, the body and bonnet of the valve may be so shaped, if desired, especially in vvalves of larger size, to permit the employment of four bolts E, two upon each side of the passage through the valve; but my preferred construction and arrangement of the parts are those illustrated inthe accompanying drawings.

It will be further understood without illustration or detailed description that myinvcntion is likewise applicable to straightway valves in which the valve stem and disk are moved longitudinally by means of a lever connected to the upper end of the valvestem, such valves being commonly known as quick-openin g valves.

Under the construction and arrangement shown in the drawings and thus far described the binding-nuts K K, of whatever form em- IOC IIO

ployed, are applied to the Vupper ends of the bolts E E, and this I consider the preferable arrangement, but it will nevertheless be readily understood that a reverse arrangement may be employed and the nuts be applied to the lower ends of the bolts and their upper ends be provided With heads resting upon the upper surface of lthe bonnet or be secured therein after the manner in Fig. 5 without departing from the broader scope of my invention.

Having thus fully described my invention, I claiml. In a straightway valve, the combination, with the body portion of the casing containing the valve-seat and provided with the opposite pipe connections, and the bonnet or hood of the casing seated upon said body portion, of bolts passing vertically through said' body and bonnet within the same and upon opposite sides of the passage through the valve, said bolts suitably engaging the casing at one end and screw-threaded at their opposite ends, and binding-nuts applied to the threaded ends of said bolts to firmly secure the two portions of the casing together, substantially as described.

2. In astraightway valve, the combination, with the body portion of the casing, and the bonnet or hood portion seated upon said body portion, of bolts passing vertically through said body and bonnet of the casing Within the same and on opposite sides of the passage through the valve, and in the plane of the valve-disk so as to be engaged thereby and serve to guide the disk in its vertical movements, said bolts suitably engaging the casing at one end and screw-threaded at their opposite ends, and binding-nuts applied to the threaded ends of said bolts, substantially -as and for the purpose described.

3. In a straightway valve, the combination, With the body portion of the casing and the bonnet or hood portion seated thereon, of bolts passing vertically through said body and bonnet Within the same and on opposite sides of the passage through the valve, and provided at one end with enlarged heads bearing against thesurface of the casing and screw-threaded at their opposite ends, and binding-nuts applied to the threaded ends of said bolts, substantially as and for the purpose described.

4. In a straightway valve, the combination, with the body portion and the bonnet or hood portion of the casing, of bolts passing vertically through said body and bonnet, Within the same and on opposite sides of the passage through the valve, said bolts being provided at one end with enlarged heads bearing against the surface of the casing and screwthreaded at their opposite ends, closed capnuts applied to the threaded ends of said bolts, to bind the tWo portions of the casing firmly together, and packing-washers surrounding said bolts and interposed between the surface of the casing and the bolt-heads and nuts, substantially as'described.

5. In a straightway valve, the combination with the body portion and the bonnet or hood portion of the casing, of bolts passing vertically through said body and bonnet, Within the same and on opposite sides of the passage through the valve, and in the plane of the valve-disk so as to be engaged thereby and serve to guide the disk in its vertical movements, said bolts being provided at one end with enlarged heads bearing against the surface of the casing and screw-threaded at their opposite ends, closed cap-nuts applied to the threaded ends of said bolts and bearing upon the surface of the casing to firmly bind the two portions thereof together, and packing-washers surrounding said bolts and interposed between the surface of the casing and the bolt-heads and nuts, substantially as described.

6. In a straightway valve, the combination, with the body portion of the casing containing the valve-seat and provided with the opposite pipe connections, and the bonnet or hood of the casing seated upon said body portion, of bolts passing vertically through said body and bonnet within the same and upon opposite sides of the passage through the valve, said bolts engaging the body of the casing at theirlower ends and screw-threaded at their upper ends, and binding-nuts applied to their upper ends and bearing upon the upper surface of the bonnet, substantially as and for the purpose described. Y

7. In a straightway valve, the combination, with the body portion of the casing, and the bonnet or hood portion seated upon said body portion, of bolts passing vertically through said body and bonnet of the casing within the same and on opposite sides 'of the passage through the valve, and in the plane of the valve-disk so as to be engaged thereby and serve to guide the disk in its vertical movements, said bolts engaging the body of the casing at their lower ends and having their upper ends threaded and provided with binding -nuts screwed upon them and bearing against the upper side of the bonnet, substantially as and for the purpose described.

8. In a straightw ay valve, the combination, with the body portion of the casing and the bonnet or hood portion seated thereon, of bolts passed upward through said body and bonnet within the same and on opposite sides of the passage through the valve, said bolts being provided at their lower ends with enlarged heads bearing against the under side of said body and screw-threaded at their upper ends, and binding-nuts applied to the upper ends of said bolts and bearing upon the upper surface of the bonnet, substantially as and for the purpose described.

9. In a straightway valve, the combination, with the body portion of the casing and the bonnet or hood portion, the latter being pro- IOO IIO

vided with a vertically-extending neck portion, of bolts passing vertically through said body and bonnet, within the saine and on opposite sides of the passage through the valve, said bolts engaging said body at their lower ends and screw-threaded at their upper ends, cap-nuts screwed upon the upper ends of such bolts and bearing upon the upper surface of the bonnet, a cross-head or gland iitting upon the upper end of the neck portion of the bonnet and confining the packing around the valve-stein at the upper end of such neck portion, and rods connecting the cap-nuts with the opposite ends of said cross-head, substantially as and for the purpose described.

l0. In a straightway valve, the combination, with the body portion A containing the valve-seat and having the opposite pipe connections B B, and the bonnet or hood portion C seated upon the bodyA and provided with internal threads, of the bolts E E passing vertically through the body A and bonnet C within the saine and on opposite sides of the passage through the valve, said bolts engaging the bodyA at their lower ends and screwthreaded at their upper ends, the nuts K K screwed upon the upper ends of said bolts E E and bearing upon the upper surface of the bonnet C, the valve-stein G provided with external threads H engaging the internal threads of the bonnet C, and the valve-disk F carried by the stein G and at its opposite edges engaging and guided upon the bolts E E, substantially as and for the purpose described.

ll. In a straightway valve, the coinbination, with the body portion A of the casing, and the bonnet or hood portion C, of the bolts E E passed through the body A and bonnet C and provided at their lower ends with the heads L L bearing against the under side of the body A and held from turning by engageinent therewith, and screw-threaded at their upper ends, the closed cap-nuts K K screwed upon the upper ends of the bolts E E, the pael;ingwashers N N interposed between the heads L L of the bolts and the under side of the body A, and the washers O O interposed between the nuts K K and the upper side of the bonnet C, substantially as and for the purpose described.

l2. In a straightway valve, the combination, with the body portion A of the easing, and the bonnet or hood portion C, the latter provided with the vertically-extending neck portion D, of the bolts E E passing vertically through the body A and the bonnet O, within the saine and on opposite sides of the passage through the valve, said bolts engaging the bodyA at their lower ends and screw-threaded at their upper ends, the cross-head or gland Q fitting over the upper end of the neel; D of the bonnet C, the cap-nuts K K screwed upon the upper ends of the bolts E E and provided with the verticallyextending rods R R passing through holes in the opposite ends of the cross-head Q, and the nuts S S screwed upon the upper ends of the rods R R, substantially as and for the purpose described.

13. In a straightway valve, the combination, with the body portion A containing the valve-seat and provided with opposite pipe connections B B, and the bonnet C seated upon the body A and provided with internal threads, of the bolts E E passed upward through the bodyA and bonnet C within the same and on opposite sides of the passage through the valve, and provided at their lower ends with the heads L L bearing against the under side of the body A and screw-threaded at their upper ends, the closed cap-nuts K K screwed upon the upper ends of the bolts E E, the washers N N interposed between the heads L L of the bolts and the under side of the body A and the washers O O interposed between the nuts K K and the upper surface of the bonnet C, the valve-stein G provided with external threads II engaging the internal threads of the bonnet C, and the valve F carried by the stein G and engaging and guided by the bolts E E at its opposite edges, substantially as and for the purpose dcscribed.

EDMUND H. LUNKEN.

Vitnesses:

EDGAR B. CRONKHITE, M. C. LAMB. 

